I don't like what i see throw the oil level sight. Seem's to be a broken oring or what? I tryed to unscrew the flat screw but it turning without removing. Any ideal how ca i reach inside to check if everyting's ok?

Right, as long as that piece can't break free and migrate into the engine through the small holes in the plate behind it, you've got nothing to worry about. It will make it a bit tough to determine the oil level in the bike; you might want to look into installing an aftermarket dipstick - I had one on my 1100, and they're much easier to read. You don't have to get down on your knees with a flashlight and screwdriver to check your oil!